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Revenue - Revenue from Forward Contracts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivatives
Repurchase agreement liability	$ 14,600
Net unrealized gains (losses)	(18,114)	$ 8,178	$ 3,581
Forward sales contracts
Derivatives
Net unrealized gains (losses)	8,800	(4,800)	2,200
Revenue	$ 181,700	$ 145,600	$ 123,800

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- Definition

Amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets.

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